/*
 * Copyright 2007 Rob Nielsen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.googlecode.proxymatic.apps.factory.handlers;

import com.googlecode.proxymatic.apps.factory.ImplementationLookup;
import com.googlecode.proxymatic.apps.factory.InstanceProvider;
import com.googlecode.proxymatic.core.MethodInvoker;
import com.googlecode.proxymatic.core.ReturnTypeModifier;
import com.googlecode.proxymatic.core.handlers.method.CheckingParameterModifier;
import com.googlecode.proxymatic.core.handlers.method.ConstructorMethodInvoker;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;

public class ResolvingFactoryConstructorMethodHandler extends BaseFactoryMethodHandler {
    private final CheckingParameterModifier parameterModifier;

    public ResolvingFactoryConstructorMethodHandler(ImplementationLookup implementationLookup, InstanceProvider instanceProvider) {
        super(implementationLookup);
        this.parameterModifier = new ResolvingFactoryParameterModifier(instanceProvider);
    }

    public MethodInvoker getInvoker(Method method, Class returnType, Class[] parameterTypes) {
        Constructor[] constructors = returnType.getConstructors();
        for (int i = 0; i < constructors.length; i++) {
            Constructor constructor = constructors[i];
            Class[] candidateParameterTypes = constructor.getParameterTypes();
            if (parameterModifier.supportsParameterTypes(parameterTypes, candidateParameterTypes)) {
                return new ConstructorMethodInvoker(constructor, parameterModifier, ReturnTypeModifier.NO_MODIFICATIONS);
            }
        }
        return NOT_HANDLED;
    }
}
